On our 1967 summer visit to Scotland and England I brought along a pair of baseball-sized rubber balls so my cousins & I could play catch (and, as it turned out, rounders). During a day-trip including a stop at such a sound mirror, my cousin John & I spent a good amount of time trying to work out how we could stand equidistant from it, throw a ball at the concave part and so play catch without the ball touching the ground. We never consistently succeeded. (There are photos of this too, but my cousin has 'em.)

On our 1967 summer visit to Scotland and England I brought along a pair of baseball-sized rubber balls so my cousins & I could play catch (and, as it turned out, rounders). During a day-trip including a stop at such a sound mirror, my cousin John & I spent a good amount of time trying to work out how we could stand equidistant from it, throw a ball at the concave part and so play catch without the ball touching the ground. We never consistently succeeded. (There are photos of this too, but my cousin has 'em.)

-Dave-

Gregory House, the doctor, is quite good at catching balls bounce from parts of his office. I think it helpssettle his mind and concentrate on higher things - or the script.